CN215958251U

CN215958251U - A plant-based artificial meat 3D printing device

Info

Publication number: CN215958251U
Application number: CN202122256128.2U
Authority: CN
Inventors: 鲍佐宝; 李景元; 高帅; 朱大千
Original assignee: Hangzhou Pan Da Technology Co ltd
Current assignee: Hangzhou Pan Da Technology Co ltd
Priority date: 2021-09-17
Filing date: 2021-09-17
Publication date: 2022-03-08
Anticipated expiration: 2031-09-17

Abstract

The utility model discloses a 3D printing device for plant-based meat analogue. It is including annotating material subassembly and printing element, annotate on the material subassembly and be fixed with on the printing element respectively and annotate material pipe and material passageway, annotate the material pipe and install inside material passageway, annotate and be equipped with the ring channel on the material pipe lateral wall, the sealing ring is installed to the ring channel opening part, ring channel bottom cover is established and sliding connection has the extrusion ring, be equipped with inclined plane one on the sealing ring inside wall, inclined plane one inclines towards the ring channel bottom from being close to annotating material subassembly one side to being close to printing element one side, be equipped with on the extrusion ring lateral wall with inclined plane one assorted inclined plane two, inclined plane one and inclined plane two phase contact, it is close to printing element one end opening part and is equipped with the fender dish to annotate the material pipe, through connecting rod fixed connection between extrusion ring and the fender dish, be equipped with the connecting rod through-hole between ring inside wall and the notes material pipe terminal surface, the connecting rod is arranged in the connecting rod through-hole and rather than sliding connection. The utility model has the beneficial effects that: the product molding quality is improved.

Description

Plant-based artificial meat 3D printing device

Technical Field

The utility model relates to the technical field of 3D printing, in particular to a 3D printing device for plant-based artificial meat.

Background

3D printing (3 DP), a technique for constructing objects by layer-by-layer printing using bondable materials such as powdered metals or plastics based on digital model files, is one of the rapid prototyping techniques, also known as additive manufacturing. The 3D printing is usually implemented by using a digital technology material printer, and is often used for manufacturing models in the fields of mold manufacturing, industrial design, and the like, and then gradually used for direct manufacturing of some products.

The plant-based meat analogue prepared by the 3D printing technology is delicious, attractive and attractive, and meets the requirements of consumers. At present, no food 3D printing equipment specially aiming at plant-based meat analogue exists in the market, most of the plant-based meat analogue is prepared with plant protein raw materials in advance and then manually added into a charging barrel of a conventional 3D food printer for printing, and the method has the defects that the printed plant-based meat analogue product is low in forming quality, does not have real meat fiber feeling, is poor in taste and is almost as good as the taste of directly eating meat emulsion.

SUMMERY OF THE UTILITY MODEL

The utility model provides a plant-based artificial meat 3D printing device which can improve the forming quality of products and has real meat fiber feeling, and aims to overcome the defects that the products in the prior art are not real meat fiber feeling and low in forming quality.

In order to achieve the purpose, the utility model adopts the following technical scheme:

A3D printing device for plant-based meat analogue comprises an injection component and a printing component, wherein an injection pipe and a material channel are respectively fixed on the injection component and the printing component, the injection pipe is arranged in the material channel and is in interference fit with the material channel, an annular groove is arranged on the outer side wall of the injection pipe, a sealing ring is arranged at the opening of the annular groove, an extrusion ring is sleeved at the bottom of the annular groove and is in sliding connection with the annular groove, a first inclined surface is arranged on the inner side wall of the sealing ring, the first inclined surface inclines towards the bottom of the annular groove from one side close to the injection component to one side close to the printing component, a second inclined surface matched with the first inclined surface is arranged on the outer side wall of the extrusion ring, the first inclined surface is in contact with the second inclined surface, a baffle disc is arranged at the opening of the injection pipe close to one end of the printing component, and the extrusion ring is fixedly connected with the baffle disc through a plurality of connecting rods, be equipped with between the inside wall of ring channel and the terminal surface of notes material pipe with connecting rod assorted connecting rod through-hole, the connecting rod is arranged in the connecting rod through-hole and rather than sliding connection, it is equipped with the extrusion ring resetting means who is connected with the extrusion ring on the material pipe to annotate, it includes feed cylinder one to annotate the material subassembly, the internally mounted of feed cylinder one has screw rod one, screw rod one rotates with the feed cylinder and is connected, annotate the material pipe and fix the tip at feed cylinder one and be linked together with the inside of feed cylinder one, be equipped with feed inlet and water inlet on the lateral wall of feed cylinder one, the water inlet is arranged in the feed inlet and is annotated between the material pipe, still cup jointed the ring of generating heat on the feed cylinder one, the ring of generating heat is arranged in the water inlet and is annotated between the material pipe.

The equipment is perfectly integrated by a traditional double-screw high-humidity extruder and a screw type extruded food 3D printer, and is formed once from raw materials to finished products, so that the steps are simplified, most of labor is saved, and the equipment is suitable for industrial production. Annotate the material subassembly and be linked together with the printing module through the cooperation of annotating material pipe and material passageway, annotate the material that the material subassembly was exported through annotating the material pipe and pour into the printing module through the material passageway and carry out 3D again and print. When the material flows to the in-process of material passageway from annotating the material pipe, keep off the dish and be washed away by automatic, under the connecting action of connecting rod, can drive the extrusion ring and move towards the direction of printing the subassembly, through the cooperation of inclined plane one and inclined plane two this moment, can drive the outside inflation of sealing ring and take place the deformation, one part of sealing ring supports firmly on the opening of ring channel, another part then sees through the opening of ring channel and supports firmly on the inside wall of material passageway, can seal the clearance between notes material pipe and the material passageway through the design like this automatically when annotating the material, improve the leakproofness between notes subassembly and the printing subassembly, avoid appearing the pressure release, the gas condition such as run in, the shaping quality of product has been improved, make the plant base meat analogue that prints have the fibrous sensation, can compare favourably with real meat. Wherein extrusion ring resetting means is used for the restoration of extrusion ring, removes the extrusion state of sealing ring after annotating the material and finishing, is convenient for annotate the dismouting between material subassembly and the printing component under natural state. During raw materials and water drop into feed cylinder one through feed inlet and water inlet respectively, transmit and mix under the rotation effect of screw rod one, later through the heating ring to the mixing material carries out the melting softening in the feed cylinder one, the mixture material after softening pours into through annotating material pipe and material passageway again and carries out 3D and print in the printing assembly.

Preferably, the extrusion ring resetting device comprises a first spring arranged in the annular groove, one end of the first spring is connected with the side surface of the extrusion ring, and the other end of the first spring is connected with the inner side wall of the annular groove. When the material flows from the material injection pipe to the material channel, the blocking disc is opened, the extrusion ring is driven to move towards the direction of the printing assembly under the connecting action of the connecting rod, and at the moment, the spring deforms under the pressure; after the material is injected, the impact force on the blocking disc disappears, the first spring restores the shape to drive the extrusion ring to automatically reset, the extrusion state of the sealing ring is automatically released, and the material injection assembly and the printing assembly are conveniently disassembled and assembled in a natural state. Simple structure and convenient control.

Preferably, the width of the opening at the opening of the annular groove is gradually reduced from inside to outside, and the edge parts of the two side surfaces of the sealing ring are respectively provided with a third inclined surface matched with the opening of the annular groove. When the sealing ring is extruded by the extrusion ring, the three inclined planes on the sealing ring firmly support and press the opening of the annular groove, the outer side end of the sealing ring firmly supports and presses the inner side wall of the material channel through the opening of the annular groove, the gap between the material injection pipe and the material channel can be automatically sealed when the material is injected through the design, the sealing performance between the material injection assembly and the printing assembly is improved, the situations of pressure relief, gas leakage and the like are avoided, and the forming quality of a product is improved.

Preferably, the inside of the material injection pipe is provided with an annular cavity, the annular cavity is arranged between the extrusion ring and the baffle disc, the annular cavity is sleeved with a piston ring and connected with the piston ring in a sliding and sealing manner, the connecting rod is distributed in an annular manner relative to the central axis of the material injection pipe, the connecting rod penetrates through the annular cavity and is connected with the annular cavity in a sliding and sealing manner, the connecting rod is fixedly connected with the piston ring, the outer side wall of the annular cavity is provided with an annular opening, the annular opening is arranged between the piston ring and the baffle disc, and the annular opening is connected with an annular expansion sheet in a sealing manner. Annotate the material in-process, when the fender dish is broken and when moving towards printing mechanism's direction, can drive the connecting rod and take place synchronous motion in the connecting rod through-hole, and then drive the piston ring on the connecting rod and also move towards printing mechanism's direction, the air that just is close to printing mechanism one side in the annular cavity this moment is compressed for annular expansion piece pressurized of annular opening part outwards expands, also presses on material passageway's inside wall, has further improved the leakproofness between notes material pipe and the material passageway.

Preferably, the material passageway is fixed with the buffering ring on being close to the terminal surface of annotating material subassembly one end, the axis of buffering ring and the axis coincidence of material passageway and the internal diameter of buffering ring are less than the internal diameter of material passageway, feed cylinder one and annotate the material pipe and all contact with the buffering ring, just be located on the inside wall of material passageway and be equipped with near annotating material subassembly one end and cushion the ring recess with the inside part assorted of buffering ring. When the material injection pipe is completely installed in the material channel, the end face of the material channel and the end face of the first charging barrel can be prevented from directly impacting through the design of the buffer ring, and equipment is protected. The buffering ring can be made of a thermal expansion material, when the mixed material in a molten state flows through the position of the buffering ring groove, the buffering ring in the buffering ring groove can be heated and expanded to be tightly pressed on the outer side wall of the material injection pipe, and the sealing property between the material injection pipe and the material channel is further improved.

Preferably, the printing assembly comprises a rack, a second charging barrel and a printing platform are arranged on the rack, the printing platform is movably connected with the rack, the second charging barrel is arranged above the printing platform and fixedly connected with the rack, a material channel is fixed on the side wall of the second charging barrel and communicated with the inside of the second charging barrel, a second screw rod is arranged inside the second charging barrel and rotatably connected with the second charging barrel, and a nozzle is fixed at the bottom of the second charging barrel. The mixed material is injected into the second charging barrel through the material injection pipe and the material channel, is transmitted to the nozzle under the rotating action of the second screw rod, is sprayed to the printing platform through the nozzle to perform 3D printing, and in the process, the printing platform can perform free movement in the direction of the three axes of XYZ on the rack.

Preferably, the material channel is internally provided with a mounting frame in a sliding connection mode, the mounting frame is provided with a rotating shaft, the rotating shaft is rotatably connected with the mounting frame, the side wall of the rotating shaft is fixedly provided with a plurality of stirring rods, one end, close to the printing assembly, of the rotating shaft is fixedly provided with a first bevel gear, a second bevel gear matched with the first bevel gear is fixedly arranged on a second screw, one end, close to the material injection assembly, of the mounting frame is in contact with one surface, close to the printing assembly, of the blocking disc, and a mounting frame resetting device is installed in the material channel. Annotate the material in-process, when keeping off the dish and being washed out and when moving towards printing mechanism's direction, still can promote the mounting bracket to move towards printing mechanism's direction, make the epaxial bevel gear one take place the meshing with bevel gear two on the screw rod two, and then make screw rod two drive the pivot and rotate, carry out the stirring that does not stop to the misce bene by the epaxial puddler of commentaries on classics, the condition of condensing appears in the misce bene material of preventing the molten condition in the material passageway, avoid blockking up, guarantee to annotate the smoothness nature of material process. Wherein the mounting bracket resetting device plays a role in resetting the mounting bracket after the material injection is finished.

Preferably, the shape of mounting bracket is the spill, be equipped with on the inside wall of material passageway with the base assorted base spout of mounting bracket, the base of mounting bracket is installed in the base spout and rather than sliding connection, the both ends of pivot are installed respectively on two sides of mounting bracket and rather than rotate and be connected. Through the design of base spout, made things convenient for the mounting bracket to install on the inside wall of material passageway, played the guide effect to the motion of mounting bracket.

Preferably, the mounting rack resetting device comprises a second spring arranged in the bottom edge sliding groove, one end of the second spring is connected with the end wall of the bottom edge sliding groove, and the other end of the second spring is connected with the end part of the bottom edge of the mounting rack. When the materials flow from the material injection pipe to the material channel, the blocking disc is opened and moves towards the printing mechanism, meanwhile, the mounting frame is pushed to move towards the printing mechanism, and at the moment, the second spring is pressed to deform; after the material is injected, the impact force on the blocking disc disappears, and the second spring recovers the shape to drive the mounting frame to automatically reset. Simple structure and convenient control.

The utility model has the beneficial effects that: through perfect integration of a traditional double-screw high-humidity extruder and a screw-type extruded food 3D printer, the method has the advantages that the steps are simplified from raw materials to finished products through one-step molding, most of labor is saved, and the method is suitable for industrial production; the gap between the material injection pipe and the material channel can be automatically sealed during material injection, the sealing performance between the material injection assembly and the printing assembly is improved, the situations of pressure relief, gas leakage and the like are avoided, the forming quality of a product is improved, and the printed plant-based meat analogue has fibrous feeling and can be compared favorably with real meat; the structure is simple, and the control is convenient; the sealing performance between the material injection pipe and the material channel is further improved; the mixed material in a molten state is prevented from being condensed in the material channel, so that the blockage is avoided, and the smoothness of the material injection process is ensured.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the internal structure of the material passage and the material injection pipe;

FIG. 3 is an enlarged view at A in FIG. 2;

FIG. 4 is an enlarged view at B in FIG. 2;

FIG. 5 is an enlarged view at C in FIG. 2;

fig. 6 is a schematic view of the structure of the seal ring.

In the figure: 1. the automatic printing machine comprises a first charging barrel, a second charging barrel, a first feeding hole, a second charging hole, a third charging hole, a fourth charging hole, a fifth heating ring, a fifth charging hole, a material channel, a fourth charging hole.

Detailed Description

The utility model is further described with reference to the following figures and detailed description.

In the embodiment shown in fig. 1 and 2, a plant-based meat analogue 3D printing device comprises a material injection component and a printing component, wherein a material injection pipe 10 and a material channel 5 are respectively fixed on the material injection component and the printing component, the material injection pipe 10 is installed inside the material channel 5 and is in interference fit with the material channel 5, as shown in fig. 4, an annular groove 17 is formed on the outer side wall of the material injection pipe 10, a sealing ring 18 is installed at the opening of the annular groove 17, a pressing ring 30 is sleeved and slidably connected at the bottom of the annular groove 17, as shown in fig. 4 and 6, a first inclined surface 27 is formed on the inner side wall of the sealing ring 18, the first inclined surface 27 inclines towards the bottom of the annular groove 17 from one side close to the material injection component to one side close to the printing component, a second inclined surface 29 matched with the first inclined surface 27 is formed on the outer side wall of the pressing ring 30, the first inclined surface 27 is in contact with the second inclined surface 29, and a blocking disc 26 is arranged at the opening of the material injection pipe 10 close to one end of the printing component, the extrusion ring 30 is fixedly connected with the baffle disc 26 through a plurality of connecting rods 25, a connecting rod through hole 24 matched with the connecting rods 25 is arranged between the inner side wall of the annular groove 17 and the end face of the material injection pipe 10, the connecting rods 25 are arranged in the connecting rod through holes 24 and are in sliding connection with the connecting rod through holes 24, and the material injection pipe 10 is provided with an extrusion ring resetting device connected with the extrusion ring 30. As shown in figures 1 and 2, the material injection assembly comprises a first charging barrel 1, a first screw rod 35 is installed inside the first charging barrel 1, the first screw rod 35 is rotatably connected with the first charging barrel 1, a material injection pipe 10 is fixed at the end of the first charging barrel 1 and communicated with the inside of the first charging barrel 1, a feeding port 2 and a water inlet 3 are arranged on the side wall of the first charging barrel 1, the water inlet 3 is arranged between the feeding port 2 and the material injection pipe 10, a heating ring 4 is further sleeved on the first charging barrel 1, and the heating ring 4 is arranged between the water inlet 3 and the material injection pipe 10.

As shown in fig. 4, the pressing ring returning means includes a first spring 28 disposed inside the annular groove 17, one end of the first spring 28 is connected to a side surface of the pressing ring 30, and the other end of the first spring 28 is connected to an inner sidewall of the annular groove 17.

As shown in fig. 4, the opening width at the opening of the annular groove 17 is gradually reduced from inside to outside, and as shown in fig. 4 and 6, the edge portions of both side surfaces of the sealing ring 18 are provided with three inclined surfaces 19 matching with the opening of the annular groove 17.

As shown in fig. 4, an annular cavity 21 is arranged inside the material injection pipe 10, the annular cavity 21 is arranged between the extrusion ring 30 and the retaining disc 26, the piston ring 20 is sleeved inside the annular cavity 21 and connected with the annular cavity in a sliding and sealing manner, the connecting rod 25 is annularly distributed about the central axis of the material injection pipe 10, the connecting rod 25 penetrates through the annular cavity 21 and is connected with the annular cavity in a sliding and sealing manner, the connecting rod 25 is fixedly connected with the piston ring 20, an annular opening 22 is arranged on the outer side wall of the annular cavity 21, the annular opening 22 is arranged between the piston ring 20 and the retaining disc 26, and an annular expansion sheet 23 is connected with the annular opening 22 in a sealing manner.

As shown in fig. 3, a buffer ring 15 is fixed on the end face of the material channel 5 near one end of the material injection assembly, the central axis of the buffer ring 15 is coincident with the central axis of the material channel 5, the inner diameter of the buffer ring 15 is smaller than that of the material channel 5, the first charging barrel 1 and the material injection pipe 10 are both in contact with the buffer ring 15, and a buffer ring groove 16 matched with the inner side portion of the buffer ring 15 is arranged on the inner side wall of the material channel 5 and near one end of the material injection assembly.

As shown in fig. 1 and 2, the printing assembly comprises a frame 6, a second charging barrel 7 and a printing platform 9 are arranged on the frame 6, the printing platform 9 is movably connected with the frame 6, the second charging barrel 7 is arranged above the printing platform 9 and is fixedly connected with the frame 6, a material channel 5 is fixed on the side wall of the second charging barrel 7 and is communicated with the inside of the second charging barrel 7, a second screw 13 is arranged inside the second charging barrel 7, the second screw 13 is rotatably connected with the second charging barrel 7, and a nozzle 8 is fixed at the bottom of the second charging barrel 7.

As shown in fig. 5, the inner side wall of the material passage 5 is connected with an installation frame 11 in a sliding manner, a rotating shaft 12 is installed on the installation frame 11, the rotating shaft 12 is rotatably connected with the installation frame 11, a plurality of stirring rods 31 are fixed on the side wall of the rotating shaft 12, a first bevel gear 34 is fixed at one end, close to the printing assembly, of the rotating shaft 12, a second bevel gear 14 matched with the first bevel gear 34 is fixed on a second screw 13, one end, close to the injecting assembly, of the installation frame 11 is in contact with one surface, close to the printing assembly, of the blocking disc 26, and an installation frame resetting device is installed in the material passage 5.

As shown in fig. 2 and 5, the mounting frame 11 is concave, a bottom edge chute 32 matched with the bottom edge of the mounting frame 11 is arranged on the inner side wall of the material passage 5, the bottom edge of the mounting frame 11 is installed in the bottom edge chute 32 and is slidably connected with the bottom edge chute, and two ends of the rotating shaft 12 are respectively installed on two side edges of the mounting frame 11 and are rotatably connected with the side edges.

As shown in FIG. 5, the mounting bracket resetting device comprises a second spring 33 arranged in the bottom edge sliding groove 32, one end of the second spring 33 is connected with the end wall of the bottom edge sliding groove 32, and the other end of the second spring 33 is connected with the bottom edge end part of the mounting bracket 11.

The working principle is as follows: raw materials and water are respectively put into the first charging barrel 1 through the feeding hole 2 and the water inlet 3, the raw materials and the water are transmitted and mixed under the rotating action of the first screw rod 35, then the mixed materials in the first charging barrel 1 are melted and softened through the heating ring 4, the softened mixed materials are injected into the second charging barrel 7 through the material injection pipe 10 and the material channel 5 and are transmitted to the nozzle 8 under the rotating action of the second screw rod 13, and the mixed materials are sprayed onto the printing platform 9 through the nozzle 8 to be printed in 3D mode, and in the process, the printing platform 9 can freely move in the XYZ three-axis direction on the machine frame 6.

When the mixture in the molten state flows through the position of the buffer ring groove 16, the buffer ring 15 in the buffer ring groove 16 can be heated and expanded to be pressed on the outer side wall of the material injection pipe 10, so that the sealing performance between the material injection pipe 10 and the material channel 5 is improved.

During the process of the mixture in the molten state flowing from the feeding pipe 10 to the material channel 5, the blocking disc 26 will be washed away and move towards the printing mechanism, and will bring the connecting rod 25 and the pressing ring 30 and the piston ring 20 thereon together to move towards the printing mechanism: on one hand, through the matching of the first inclined plane 27 and the second inclined plane 29, the sealing ring 18 is extruded by the extrusion ring 30 to expand outwards, at this time, the third inclined plane 19 on the sealing ring 18 is firmly pressed on the opening of the annular groove 17, and the outer side end of the sealing ring 18 is firmly pressed on the inner side wall of the material channel 5 through the opening of the annular groove 17, so that the sealing performance between the material injection pipe 10 and the material channel 5 is further improved; on the other hand, by the movement of the piston ring 20, the air in the annular cavity 21 and on the side close to the printing mechanism will be compressed, so that the annular expansion sheet 23 at the annular opening 22 is pressed to expand outwards and also pressed on the inner side wall of the material channel 5, and the sealing performance between the material injection pipe 10 and the material channel 5 is further improved.

In addition, in the process that the baffle disc 26 moves towards the direction of the printing mechanism, the mounting frame 11 is also pushed to move towards the direction of the printing mechanism, the first bevel gear 34 on the rotating shaft 12 is meshed with the second bevel gear 14 on the second screw 13, the second screw 13 drives the rotating shaft 12 to rotate, and the stirring rod 31 on the rotating shaft 12 continuously stirs the mixed materials, so that the mixed materials in a molten state are prevented from being condensed in the material channel 5, the blockage is avoided, and the fluency of the material injection process is ensured.

Claims

1. The utility model provides a plant base analogue 3D printing device, characterized by, including annotating material subassembly and printing element, annotate on the material subassembly and be fixed with on the printing element respectively and annotate material pipe (10) and material passageway (5), annotate the inside and both interference fit of material passageway (5) of material pipe (10), be equipped with ring channel (17) on annotating the lateral wall of material pipe (10), sealing ring (18) are installed to the opening part of ring channel (17), the bottom cover of ring channel (17) is established and sliding connection has extrusion ring (30), be equipped with inclined plane one (27) on the inside wall of sealing ring (18), inclined plane one (27) are from one side that is close to annotating the material subassembly to one side that is close to the printing element towards the bottom slope of ring channel (17), be equipped with on the lateral wall of extrusion ring (30) with inclined plane one (27) assorted inclined plane two (29), the printing assembly comprises a first inclined plane (27) and a second inclined plane (29), a blocking disc (26) is arranged at an opening of one end, close to the printing assembly, of the material injection pipe (10), the extrusion ring (30) is fixedly connected with the blocking disc (26) through a plurality of connecting rods (25), a connecting rod through hole (24) matched with the connecting rods (25) is formed between the inner side wall of the annular groove (17) and the end face of the material injection pipe (10), the connecting rods (25) are arranged in the connecting rod through holes (24) and are in sliding connection with the connecting rod through holes, an extrusion ring resetting device connected with the extrusion ring (30) is arranged on the material injection pipe (10), the material injection assembly comprises a first material cylinder (1), a first screw rod (35) is installed inside the first material cylinder (1), the first screw rod (35) is rotatably connected with the first material cylinder (1), the material injection pipe (10) is fixed at the end of the first material cylinder (1) and is communicated with the inside of the first material cylinder (1), be equipped with feed inlet (2) and water inlet (3) on the lateral wall of feed cylinder (1), feed inlet (2) and notes between material pipe (10) are arranged in water inlet (3), still cup jointed on feed cylinder (1) and generate heat ring (4), generate heat ring (4) arrange in between water inlet (3) and notes material pipe (10).

2. A plant based meat analogue 3D printing device according to claim 1, wherein said pressing ring returning means comprises a first spring (28) placed inside the annular groove (17), one end of said first spring (28) being connected to the side of the pressing ring (30), the other end of said first spring (28) being connected to the inner side wall of the annular groove (17).

3. A plant-based meat analogue 3D printing device as claimed in claim 1, wherein the width of the opening at the opening of said annular groove (17) is gradually reduced from the inside to the outside, and the edge portions of both sides of said sealing ring (18) are provided with a third inclined surface (19) matching the opening of said annular groove (17).

4. The plant-based artificial meat 3D printing device according to claim 1, wherein an annular cavity (21) is formed in the feeding pipe (10), the annular cavity (21) is arranged between the extrusion ring (30) and the baffle disc (26), a piston ring (20) is sleeved in the annular cavity (21) and connected with the annular cavity in a sliding and sealing mode, the connecting rods (25) are distributed annularly about the central axis of the feeding pipe (10), the connecting rods (25) penetrate through the annular cavity (21) and are connected with the annular cavity in a sliding and sealing mode, the connecting rods (25) are fixedly connected with the piston ring (20), an annular opening (22) is formed in the outer side wall of the annular cavity (21), the annular opening (22) is arranged between the piston ring (20) and the baffle disc (26), and an annular expansion sheet (23) is connected with the annular opening (22) in a sealing mode.

5. A plant-based meat analogue 3D printing device according to claim 1, wherein a buffer ring (15) is fixed on the end surface of the material channel (5) near one end of the material injection component, the central axis of the buffer ring (15) coincides with the central axis of the material channel (5) and the inner diameter of the buffer ring (15) is smaller than the inner diameter of the material channel (5), the first material cylinder (1) and the material injection pipe (10) are both in contact with the buffer ring (15), and a buffer ring groove (16) matching with the inner portion of the buffer ring (15) is arranged on the inner side wall of the material channel (5) near one end of the material injection component.

6. A plant-based meat analogue 3D printing device according to claim 1, wherein said printing assembly comprises a frame (6), said frame (6) is provided with a second material cylinder (7) and a printing platform (9), said printing platform (9) is movably connected with said frame (6), said second material cylinder (7) is disposed above said printing platform (9) and is fixedly connected with said frame (6), said material passage (5) is fixed on the side wall of said second material cylinder (7) and is communicated with the inside of said second material cylinder (7), said second material cylinder (7) is internally provided with a second screw rod (13), said second screw rod (13) is rotatably connected with said second material cylinder (7), and the bottom of said second material cylinder (7) is fixed with a nozzle (8).

7. The plant-based artificial meat 3D printing device according to claim 6, wherein a mounting frame (11) is slidably connected to the inner side wall of the material passage (5), a rotating shaft (12) is installed on the mounting frame (11), the rotating shaft (12) is rotatably connected with the mounting frame (11), a plurality of stirring rods (31) are fixed to the side wall of the rotating shaft (12), a first bevel gear (34) is fixed to one end, close to the printing assembly, of the rotating shaft (12), a second bevel gear (14) matched with the first bevel gear (34) is fixed to the second screw (13), one end, close to the material injection assembly, of the mounting frame (11) is in contact with one surface, close to the printing assembly, of the baffle disc (26), and a mounting frame resetting device is installed in the material passage (5).

8. A plant-based meat analogue 3D printing device according to claim 7, wherein the mounting frame (11) is concave, the inner side wall of the material channel (5) is provided with a bottom edge chute (32) matched with the bottom edge of the mounting frame (11), the bottom edge of the mounting frame (11) is installed in the bottom edge chute (32) and is in sliding connection with the bottom edge chute, and two ends of the rotating shaft (12) are respectively installed on two side edges of the mounting frame (11) and are in rotating connection with the two side edges.

9. A plant-based meat analogue 3D printing device as claimed in claim 7, wherein said mounting bracket resetting means comprises a second spring (33) arranged in the bottom edge runner (32), one end of said second spring (33) is connected with the end wall of the bottom edge runner (32), and the other end of said second spring (33) is connected with the bottom edge end of the mounting bracket (11).